Assigztoe to john



(No Model.)-

G. E. DAVIS.

SEAL LOCK. No. 38L534. PatentedApr. 24, 188.8.

UNITED STATES PATENT Erice.

CHARLES E. DAVIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO JOHN W. NORRIS,

OF SAME PLACE.

SEAL-LOCK.

SPECIFICATION forming part of Letters Patent No. 381,534, dated April 24:, 1888.

Application filed September 15,1987. Serial No. 249,734. (No mcdel.)

To all whom it may concern:

Be it known that I, CHARLES E. DAvis, a citizen of the United States. and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Seal-Locks, of which the following is a full, clear, and exact description, reference being had to theaccompanying drawings, and to the letters of reference marked thereon, which form part of this specification.

My present invention relates to seal-locks of the class for which Letters Patent of the United States were granted me October 4, 1887, No. 371,037, and is an improvementthereon, the

v same consisting in the matters hereinafter fully described, and set forth in the appended claims. l

ln the accompanying drawings, Figure l is a perspective view of my lock when in operative position. Fig. 2 is a' transverse sectional view thereof taken upon the horizontal line Y Y of said Fig. l. Fig. 3 is a like-transverse sectional view taken upon the horizontal line X X of said Fig. 1. Fig.V 4 is a vertical section taken through the center of the device, with the shackle-bolt-shovrn in elevatiomlooking in the direction indicated by the arrow shown in said Fig. 1. Fig. 5 is an elevation of the shackle-bolt, the same being removed from the lockframe.

The main features of my invention are embraced in the construction and relative operative arrangement of the several parts, the same being generally described as follows: The shacklebolt,which is laxially and perpendicularly movable Within its bearings forming part of the lock-frame, is arranged and adapted, first, when withdrawn from its hasp-securing position to receive the frangible sealing-plate employed for securing the bolt in its locked position, and,second, through its return movement to its hasp-securing positiomto guide the said seal to its seat provided within the frame, and when reaching such position to be automatically locked therein.

rllhe construction and relative arrangement of the bolt and frame are such that the sealingplate is operatively heldin position inside the line circumferentially of the greatest diameter of the bolt, or, in other Words, radially Within the sealing-plate.

the are described by the bolt in its axial or semirotative movement essentially preliminary to its withdrawal from its hasp-iocking position, axial movement ofthe bolt bringing about its engagement with and destruction of The bolt is provided with means for preventing the removal of the sealingplate from its operative position within the frame after being located therein, as mentioned, necessitating its destruction before the bolt can be Withdrawn from its hasp-securing position; also,with means for properly checking or determining the length of travel of the bolt in describing its several movements.

Referring particularly to the several views of the drawings, which illustrate the most desirable form of construction of my invention, the lock-frame is composed of a base-plate, A, an overhanging shell, A, and aprojecting lug or bracket, A2. The bolt B, intended to hold the hasp C to the staple c,which is preferably Xed to or forms part of the lock-frame, journals in the bracket ,A2 and in the lower Wall of the shell A', being adapted to move axially and perpendicnlarly within its Ysaid bearings. The front or other position of the shell A' intended for sustaining the sealing-plate D in operative position exposed to view is provided on each side With a perpendicular slot,or with an overhanging portion, a, the same operating as guides for directing to its place and securing the seal in its operative or bolt-sealing position.

The bolt B is provided with a recess, b, of length and depth corresponding with the dimensions perpendicularly and transversely of the sealing-plate, and depth and length of the seal-seat formed within the frame by the over` hanging portions a a, the axial position of the bolt being such with relation to the said seal that when the bolt is moved iu a rotative direction its larger diameter or portion which extends beyond the door of the recess b, or smallest diameter which moves through an arc which is obviously interrupted by the presence of the sealing-plate,which must be broken before the bolt can be carried through its full rotative movement to position, enabling its withdrawal perpendicularly from its haspsecuring position. The bolt is provided at the IOO upper termination ofthe recess b with a-iiange, B, the said flange operating as a guard forsecuring the sealing-plate against Withdrawal from its seat after being located therein and as a stop for determining the length of travel of the bolt through its several movements. The bolt is also provided on its side opposite the recess b with a recess, b', within which works a locking device, preferably in the form of a leaf-spring, E, located within a chamber, F, projecting from the base A,within the shell A, toward the bolt. The said chamber, being otherwise closed in the direction of the shell A, is provided with an opening, f, Within which the bolt snugly works and is capable of axial and perpendicular movement, the locking device contained within said chamber being in full effective operation in conjunction with the bolt,and at the same time thoroughly shut ofi` from the possibility of being tampered with.

The operation of the device is as follows: The bolt B being moved axially a quarter revolution from the position shown in Fig. l, its axial travel being checked by the Bange B coming in contact with the base A, is next moved perpendicularly until stopped by engagement of the said iiange with the lug or bracket A2. The bolt being next moved axially to the position shown in Fig. 4, the recess b is in position to secure thesealing-plate D. After the sealing-plate is located in said recess the bolt is moved perpendicularly to its original position,carrying the sealing-plate to its seat and being locked by the spring E, which drops into the recess b. The bolt being thus locked in position,it is impossible to remove the sealing-plate from its seat without first moving the bolt perpendicularly, which cannot be aeeomplished until the spring is forced from the recess b by axial movement of the bolt, which movement brings about the destruction of the sealing-plate.

Having thus fully described my invention, what I :claim as new herein, and desire to secure by Letters Patent, is Y l. In seal-locks, the combination, substantially as herein set forth, of a lock-frame arranged and adapted to sustain in operative position a frangible sealingplate, a shacklebolt capable of axial and perpendicular motion, provided with a recess, b, which admits of the locating of the frangible sealing-plate Within the frame and upon a plane perpendicularly within the arc of travel described by the larger diameter of said bolt, and a device or devices adapted to automatically secure said bolt perpendieularly in position from which it cannot be removed without being rst turned upon its axis,` all arranged with relation to each other and adapted to be operand described.

CHARLES E. DAVIS. In presence of- G. W. LE VIN, MARCH PoLK. 

